require 'test/unit'

# first, here is the test
class GreetingTest < Test::Unit::TestCase
  
  def test_should_say_hello_world
    greeting = Greeting.new('world')
    assert_not_nil greeting.greet
    assert_equal 'Hello world', greeting.greet
  end
end


# here is the class we're testing (in the same file for now)
class Greeting

  def initialize(audience)
    @audience = audience
  end
  
  def greet
    return ''
  end

end
